Home / 52,787.43-72,846-28,912.68

Finding the Fourth Proportional to 52,787.43, 72,846 and 28,912.68

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Solution

The fourth proportional to 52,787.43, 72,846 and 28,912.68 is: 39,899.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,787.43 : 72,846 = 28,912.68 : x
  2. Step 2: Convert to fraction form
    52,787.43/72,846 = 28,912.68/x
  3. Step 3: Cross multiply
    52,787.43x = 72,846 × 28,912.68
  4. Step 4: Simplify right side
    52,787.43x = 2,106,173,087.28
  5. Step 5: Solve for x
    x = 2,106,173,087.28/52,787.43
  6. Step 6: Final answer
    x = 39,899.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.